Hot deformation behaviour of Mo-TZM and understanding the restoration processes involved

被引：113

作者：

Chaudhuri, Atanu ^{[1
]}

Behera, Ananta N. ^{[2
]}

Sarkar, Apu ^{[2
]}

Kapoor, Rajeev ^{[2
]}

Ray, Ranjit K. ^{[3
]}

Suwas, Satyam ^{[1
]}

机构：

[1] Indian Inst Sci, Dept Mat Engn, Bangalore 560012, Karnataka, India

[2] Bhabha Atom Res Ctr, Mech Met Div, Mumbai 400085, Maharashtra, India

[3] Indian Inst Engn Sci & Technol, Dr MN Dastur Sch Mat Sci & Engn, Sibpur 711103, India

来源：

ACTA MATERIALIA | 2019年 / 164卷

关键词：

Molybdenum alloy; Mo-TZM; High temperature deformation; EBSD; Dynamic recovery; Dynamic recrystallization; REFRACTORY-METAL ALLOYS; DYNAMIC RECRYSTALLIZATION; TENSILE PROPERTIES; MOLYBDENUM ALLOYS; ODS MOLYBDENUM; TEMPERATURE; LCAC; MICROSTRUCTURE; MECHANISMS; ZIRCONIUM;

D O I：

10.1016/j.actamat.2018.10.037

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hot deformation behaviour of Mo-TZM alloy over a temperature range of 1400-1700 degrees C and strain rate range of 0.001-10.0 s(-1) was investigated. The microstructure after deformation was characterized at each deformation condition using electron back scatter diffraction technique. The high strain rate sensitivity domain was found to be in the strain rate range of 10(-2) - 10(-3) s(-1) and in temperature range of 1480-1650 degrees C. The flow stress behaviour of the material indicated dynamic recovery as well as recrystallization of the material during deformation. Microstructural investigation confirmed the occurrence of continuous dynamic recrystallization from 1400 to 1500 degrees C. At higher temperature (1600-1700 degrees C) and low strain rates (10(-2) - 10(-3) s(-1)) grain growth was dominant. At high strain rates (0.1-10 s(-1)) and high temperature (1600-1700 degrees C) dynamic recrystallization was not observed. Based on the experimental observations a schematic model of the microstructure evolution of TZM during deformation at high temperatures was proposed. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：153 / 164

页数：12

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